ghsa-q3x4-7j6p-fj5f
Vulnerability from github
Published
2025-09-23 15:31
Modified
2025-09-23 15:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

mxser: fix xmit_buf leak in activate when LSR == 0xff

When LSR is 0xff in ->activate() (rather unlike), we return an error. Provided ->shutdown() is not called when ->activate() fails, nothing actually frees the buffer in this case.

Fix this by properly freeing the buffer in a designated label. We jump there also from the "!info->type" if now too.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49191"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:00:56Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmxser: fix xmit_buf leak in activate when LSR == 0xff\n\nWhen LSR is 0xff in -\u003eactivate() (rather unlike), we return an error.\nProvided -\u003eshutdown() is not called when -\u003eactivate() fails, nothing\nactually frees the buffer in this case.\n\nFix this by properly freeing the buffer in a designated label. We jump\nthere also from the \"!info-\u003etype\" if now too.",
  "id": "GHSA-q3x4-7j6p-fj5f",
  "modified": "2025-09-23T15:31:08Z",
  "published": "2025-09-23T15:31:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49191"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2cd05c38a27bee7fb42aa4d43174d68ac55dac0f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/376922045009f8ea2d20a8fa3475e95b47c41690"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/685b6d16bf89595310b5d61394c9b97cc9505c7c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c9041b2f90c0eace73106f22350e1d2c98f5edc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6dffc2035fbaada60ca8db59e0962e34f760370a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/996291d06851a26678a0fab488b6e1f0677c0576"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b125b08dbee3611f03f53b71471813ed4ccafcdd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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